<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <!-- 
        tr 的属性
            bgcolor
            height
            align 水平对齐
            valign 垂直对齐  top middle bottom
            
     -->
</head>
<body>
    <table width="600px" height="300px" border="1">
        <tr bgcolor="#f5f5f5" height="150px" align="right" valign="top">
            <td>1</td>
            <td>2</td>
            <td>3</td>
        </tr>
        <tr>
             <td>1</td>
             <td>2</td>
             <td>3</td>
        </tr>
        <tr>
             <td>1</td>
             <td>2</td>
             <td>3</td>
        </tr>
        <tr>
             <td>1</td>
             <td>2</td>
             <td>3</td>
        </tr>
    </table> 
</body>
</html>